A Look At The Panasonic Leica 42.5mm f1.2 Nocticron Micro Four Thirds lens - YouTube
Amazon.com : Panasonic Lumix G Leica DG Nocticron Lens, 42.5MM, F1.2 ASPH, Professional Mirrorless Micro Four Thirds, Power O.I.S. H-NS043 (USA) Bundle with Slik Sprint Pro II Aluminum Tripod, 16GB SD Card :
Seamless™ Follow Focus Gear for Panasonic Leica 42.5mm f1.2 DG Nocticron ASPH Power O.I.S. Lens | Follow Focus Gears